US4971344B1 - - Google Patents

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Publication number
US4971344B1
US4971344B1 US29325789A US4971344B1 US 4971344 B1 US4971344 B1 US 4971344B1 US 29325789 A US29325789 A US 29325789A US 4971344 B1 US4971344 B1 US 4971344B1
Authority
US
United States
Prior art keywords
tubes
fluid
suspension system
energy
bicycle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
H Turner Paul
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SRAM LLC
Original Assignee
Rockshox Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rockshox Inc filed Critical Rockshox Inc
Priority to US07/293,257 priority Critical patent/US4971344A/en
Assigned to ROCKSHOX, INC., reassignment ROCKSHOX, INC., ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: TURNER, PAUL H.
Priority to AU46793/89A priority patent/AU616827B2/en
Priority to NZ231853A priority patent/NZ231853A/en
Priority to CA002005945A priority patent/CA2005945C/en
Priority to DE68919668T priority patent/DE68919668T2/en
Priority to JP1344979A priority patent/JPH02231289A/en
Priority to EP89124093A priority patent/EP0377220B1/en
Priority to DE8915636U priority patent/DE8915636U1/en
Priority to AT89124093T priority patent/ATE114567T1/en
Priority to ES89124093T priority patent/ES2068235T3/en
Priority to DE198989124093T priority patent/DE377220T1/en
Publication of US4971344A publication Critical patent/US4971344A/en
Publication of US4971344B1 publication Critical patent/US4971344B1/en
Application granted granted Critical
Priority to JP5079850A priority patent/JP2823473B2/en
Assigned to ROCKSHOX CALIFORNIA, INC. reassignment ROCKSHOX CALIFORNIA, INC. MERGER (SEE DOCUMENT FOR DETAILS). Assignors: ROCKSHOX, INC.
Assigned to FIRST NATIONAL BANK OF CHICAGO, THE reassignment FIRST NATIONAL BANK OF CHICAGO, THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ROCKSHOX, INC., FORMERLY KNOWN AS RSX ACQUISITION, INC.
Assigned to ROCKSHOX, INC. reassignment ROCKSHOX, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ROCHSHOX, INC., A CORP. OF CA
Assigned to ROCKSHOX, INC. reassignment ROCKSHOX, INC. RELEASE OF SECURITY INTEREST Assignors: FIRST NATIONAL BANK OF CHICAGO, THE
Assigned to SRAM CORPORATION reassignment SRAM CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ROCKSHOX, INC.
Assigned to JPMORGAN CHASE BANK N.A., AS AGENT reassignment JPMORGAN CHASE BANK N.A., AS AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SRAM CORPORATION
Assigned to SRAM CORPORATION reassignment SRAM CORPORATION RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
Assigned to SRAM, LLC reassignment SRAM, LLC MERGER (SEE DOCUMENT FOR DETAILS). Assignors: SRAM CORPORATION
Assigned to GENERAL ELECTRIC CAPITAL CORPORATION, AS ADMINISTRATIVE AGENT reassignment GENERAL ELECTRIC CAPITAL CORPORATION, AS ADMINISTRATIVE AGENT SECURITY AGREEMENT Assignors: SRAM, LLC
Anticipated expiration legal-status Critical
Assigned to SRAM, LLC reassignment SRAM, LLC RELEASE OF SECURITY INTEREST IN INTELLECTUAL PROPERTY COLLATERAL Assignors: GENERAL ELECTRIC CAPITAL CORPORATION, AS ADMINISTRATIVE AGENT
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K25/00—Axle suspensions
    • B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
    • B62K25/06—Axle suspensions for mounting axles resiliently on cycle frame or fork with telescopic fork, e.g. including auxiliary rocking arms
    • B62K25/08—Axle suspensions for mounting axles resiliently on cycle frame or fork with telescopic fork, e.g. including auxiliary rocking arms for front wheel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)
  • Fluid-Damping Devices (AREA)
  • Body Structure For Vehicles (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

A resilient suspension system for the front wheel of a bicycle or the like which turns bump energy into viscous heat loss without absorbing the pedaling energy of the rider. The suspension system includes two telescoping tubes (44, 46) having a fluid (62) therein and a fluid valve (60) that meters the fluid flowing between the two tubes (44, 46) on the compression and expansion of the tubes (44, 46). The invention also employs certain design features so as to retain the structural rigidity of the front fork asssembly while remaining light in weight and utilizing a majority of the standard bicycle wheel, brake and steering components.
US07/293,257 1989-01-04 1989-01-04 Bicycle with a front fork wheel suspension Expired - Lifetime US4971344A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
US07/293,257 US4971344A (en) 1989-01-04 1989-01-04 Bicycle with a front fork wheel suspension
AU46793/89A AU616827B2 (en) 1989-01-04 1989-12-14 Bicycle wheel suspension system
NZ231853A NZ231853A (en) 1989-01-04 1989-12-19 Telescoping fluid suspension system for a bicycle: valve prevents pedalling action being absorbed
CA002005945A CA2005945C (en) 1989-01-04 1989-12-19 Bicycle wheel suspension system
DE68919668T DE68919668T2 (en) 1989-01-04 1989-12-28 Suspension arrangement for the wheel of a two-wheeler.
JP1344979A JPH02231289A (en) 1989-01-04 1989-12-28 Suspension of bicycle wheel
EP89124093A EP0377220B1 (en) 1989-01-04 1989-12-28 Bicycle wheel suspension system
DE8915636U DE8915636U1 (en) 1989-01-04 1989-12-28 Wheel suspension for a bicycle
AT89124093T ATE114567T1 (en) 1989-01-04 1989-12-28 SUSPENSION ARRANGEMENT FOR THE WHEEL OF A BIKE.
ES89124093T ES2068235T3 (en) 1989-01-04 1989-12-28 SUSPENSION SYSTEM OF A BICYCLE WHEEL.
DE198989124093T DE377220T1 (en) 1989-01-04 1989-12-28 SUSPENSION ARRANGEMENT FOR THE WHEEL OF A TWO WHEEL.
JP5079850A JP2823473B2 (en) 1989-01-04 1993-04-06 Bicycle wheel suspension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/293,257 US4971344A (en) 1989-01-04 1989-01-04 Bicycle with a front fork wheel suspension

Publications (2)

Publication Number Publication Date
US4971344A US4971344A (en) 1990-11-20
US4971344B1 true US4971344B1 (en) 1992-03-24

Family

ID=23128356

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/293,257 Expired - Lifetime US4971344A (en) 1989-01-04 1989-01-04 Bicycle with a front fork wheel suspension

Country Status (9)

Country Link
US (1) US4971344A (en)
EP (1) EP0377220B1 (en)
JP (2) JPH02231289A (en)
AT (1) ATE114567T1 (en)
AU (1) AU616827B2 (en)
CA (1) CA2005945C (en)
DE (3) DE8915636U1 (en)
ES (1) ES2068235T3 (en)
NZ (1) NZ231853A (en)

Cited By (100)

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US5088705A (en) * 1991-04-05 1992-02-18 Dan Ken Industrial Co., Ltd. Bicycle shock-absorbing apparatus
US5094324A (en) * 1991-04-05 1992-03-10 Dah Ken Industrial Co., Ltd. Bicycle shock-absorbing apparatus
US5186481A (en) * 1991-04-03 1993-02-16 Rockshox, Inc. Bicycle with improved front fork wheel suspension
US5193832A (en) * 1991-09-19 1993-03-16 Wilson Stephen R Suspension for bicyles
US5195766A (en) * 1990-06-05 1993-03-23 Boge Ag Bicycle with front fork suspension
US5201244A (en) * 1992-02-27 1993-04-13 Stewart John V Bicycle handlebar stem extender
US5269549A (en) * 1991-09-19 1993-12-14 Wilson Stephen R Suspension for bicycles
US5284352A (en) * 1992-12-03 1994-02-08 Chen Tsai L Compression-adjustable bicycle shock-absorbing apparatus
US5310203A (en) * 1992-12-03 1994-05-10 Chen Tsai L Bicycle shock-absorbing apparatus
US5320374A (en) * 1991-06-11 1994-06-14 Cannondale Corporation Suspension fork
US5328196A (en) * 1991-03-20 1994-07-12 Showa Manufacturing Co., Ltd. Wheel suspension system for bicycle
US5346236A (en) * 1992-07-29 1994-09-13 Showa Corporation Suspension device for bicycle
US5359910A (en) * 1993-12-28 1994-11-01 Bettis Corporation Bicycle front fork shock absorbing mechanism
WO1994027861A1 (en) * 1993-05-25 1994-12-08 Nikita Grigoriev Bicycle front fork suspension with front wheel drive mechanism
US5409248A (en) * 1991-08-12 1995-04-25 Williams; Richard L. Bicycle suspension
US5429379A (en) * 1994-03-07 1995-07-04 Grigoriev; Nikita Impulse drive mechanism and shock driver for a land vehicle
US5445401A (en) * 1993-09-07 1995-08-29 Manitou Mountain Bikes, Inc. Suspension fork for bicycles
US5449188A (en) * 1993-03-18 1995-09-12 Showa Corporation Bicycle front wheel suspension
US5456480A (en) * 1994-06-06 1995-10-10 Rockshox, Inc. Fork suspension with variable hydraulic damping
US5470090A (en) * 1993-09-07 1995-11-28 Manitou Mountain Bikes, Inc. Precision suspension fork for bicylces
US5472221A (en) * 1993-03-18 1995-12-05 Showa Corporation Bicycle wheel fork assembly
US5478099A (en) * 1993-03-18 1995-12-26 Showa Corporation Bicycle wheel fork assembly
US5494302A (en) * 1991-06-11 1996-02-27 Cannondale Corporation Suspension assembly for a vehicle
US5509674A (en) * 1989-09-26 1996-04-23 Cannondale Corporation Bicycle suspension system
US5580075A (en) * 1994-06-06 1996-12-03 Rockshox, Inc. Bicycle fork suspension with exchangeable spring unit
USRE35401E (en) * 1991-09-19 1996-12-17 Halson Designs, Inc. Suspension for bicycles
US5634652A (en) * 1995-03-30 1997-06-03 Tsai; Chin-Sung Bicycle suspension
US5653007A (en) * 1995-04-17 1997-08-05 Answer Products, Inc. Method for producing a bicycle fork brake arch and legs assembly
US5775677A (en) * 1995-02-07 1998-07-07 Englund; Arlo C. Air or gas sprung and dampened shock absorber
WO1998040231A2 (en) 1997-03-13 1998-09-17 Cannondale Corporation Electronic suspension system for a wheeled vehicle
US5829773A (en) * 1996-01-19 1998-11-03 Tenneco Automotive Inc. Modular telescopic front fork assembly
US5848675A (en) * 1996-10-03 1998-12-15 Answer Products, Inc. Damping apparatus for bicycle forks
US5860665A (en) * 1995-08-22 1999-01-19 Keith O'Neal Air powered shock absorber for front and rear forks of bicycles
WO1999003725A1 (en) 1997-07-16 1999-01-28 Rockshox, Inc. Bicycle fork suspension having a single primary compression spring system
USD406083S (en) * 1997-12-31 1999-02-23 Rockshox, Inc. Bicycle fork crown
US5884733A (en) * 1998-01-27 1999-03-23 Rockshox, Inc. Temperature compensating system for fluid-damped suspension systems
US5924714A (en) * 1991-06-11 1999-07-20 Cannondale Corporation Bicycle suspension system
US5934697A (en) * 1996-12-02 1999-08-10 Rockshox, Inc. Fork suspension with oil bath lubrication
US6089585A (en) * 1996-12-19 2000-07-18 Bayerische Motoren Werke Aktiengesellschaft Telescopically compressible wheel suspension
US6095541A (en) * 1997-07-16 2000-08-01 Rockshox, Inc. Adjustable gas spring suspension system
US6120049A (en) * 1998-10-29 2000-09-19 Answer Products, Inc. Bicycle shock absorber including lockout means
US6135434A (en) * 1998-02-03 2000-10-24 Fox Factory, Inc. Shock absorber with positive and negative gas spring chambers
US6296092B1 (en) 1998-10-28 2001-10-02 Fox Factory, Inc. Position-sensitive shock absorber
US6311962B1 (en) 1998-02-03 2001-11-06 Fox Factory, Inc. Shock absorber with external air cylinder spring
US6382370B1 (en) * 1999-09-01 2002-05-07 K2 Bike, Inc. Shock absorber with an adjustable lock-out value and two-stage flow restriction
US6505719B2 (en) 1998-05-18 2003-01-14 Answer Products, Inc. Damping apparatus for bicycle forks
US6533459B2 (en) 2001-01-31 2003-03-18 The Torrington Company Adjustable, self-aligning, linear roller bearing
US6592136B2 (en) 2001-07-02 2003-07-15 Fox Factory, Inc. Bicycle fork cartridge assembly
US6607185B2 (en) 2001-10-17 2003-08-19 Answer Products, Inc. Suspension fork having reserved arch
US6615960B1 (en) 2000-02-11 2003-09-09 Maverick American Llc Fluid damped shock absorber and method
US6726603B1 (en) * 1999-07-13 2004-04-27 Jean-Charles Beaute Apparatus for jumping by successive leaps
US6786498B1 (en) * 2003-04-28 2004-09-07 Giant Manufacturing Co., Ltd. Shock absorbing device for a bicycle
USRE38669E1 (en) 1994-04-01 2004-12-14 Voss Darrell W Telescoping-type front fork bicycle suspensions
US20050104320A1 (en) * 2003-11-19 2005-05-19 Sram Corporation Lockout mechanism for a suspension system
US20050121271A1 (en) * 2003-12-04 2005-06-09 Spinner Industry Co., Ltd. Damper for front fork of vehicle
US20050133323A1 (en) * 2003-12-18 2005-06-23 Spinner Industry Co., Ltd. Damper for front fork of vehicle
US20060065496A1 (en) * 2001-08-30 2006-03-30 Fox Factory, Inc. Inertia valve shock absorber
US7063343B1 (en) * 2005-03-15 2006-06-20 Spinner Industry Co., Ltd Front fork damper for bicycle
US7128192B2 (en) 2001-08-30 2006-10-31 Fox Factory, Inc. Inertia valve shock absorber
US20070113344A1 (en) * 2005-11-23 2007-05-24 Hurwitz Jodie L Movable bed with an independent wheel suspension system
US20070262501A1 (en) * 2006-05-15 2007-11-15 Sram Corporation Valve mechanism for a gas suspension system
US20090243251A1 (en) * 2008-03-26 2009-10-01 Mario Galasso Methods and apparatus related to a unitary fork brace
US20100117322A1 (en) * 2008-11-13 2010-05-13 Martin Achenbach Suspension fork for a bicycle
US20100314209A1 (en) * 2009-06-15 2010-12-16 Gonzalez Jose L Bicycle shock assemblies with plunger operated valve arrangement
US20110042915A1 (en) * 2008-02-15 2011-02-24 Andreas Felsl Suspension fork
US8104782B2 (en) * 2008-10-29 2012-01-31 Dt Swiss Inc. Slider tube unit for a suspension fork
US20120217686A1 (en) * 2011-02-25 2012-08-30 Sante Pelot Compression sensitive suspension dampening
US20130161138A1 (en) * 2005-08-11 2013-06-27 Eko Sport, Inc. Valve for shock absorbers
US8607942B2 (en) 2006-04-02 2013-12-17 Fox Factory, Inc. Suspension damper having inertia valve and user adjustable pressure-relief
US8740238B2 (en) * 2007-08-29 2014-06-03 Sram, Llc Fiber-reinforced wrapped handlebar-steered suspension fork
US10029756B2 (en) 2015-07-14 2018-07-24 Duncan Bayard STOTHERS Impact absorbing support for a wheel
US10196106B1 (en) 2017-07-27 2019-02-05 Trvstper, Inc. Suspension assembly for a cycle
US10300979B2 (en) 2017-07-27 2019-05-28 Trvstper, Inc. Suspension assembly for a bicycle
US10308312B2 (en) 2017-07-27 2019-06-04 Trvstper, Inc. Suspension assembly for a cycle
USD859125S1 (en) 2018-02-08 2019-09-10 Trvstper, Inc. Cycle suspension rebound knob
USD860061S1 (en) 2018-02-08 2019-09-17 Trvstper, Inc. Cycle suspension assembly
USD860062S1 (en) 2018-02-08 2019-09-17 Trvstper, Inc. Cycle suspension assembly
USD861542S1 (en) 2018-02-08 2019-10-01 Trvstper, Inc. Cycle suspension assembly
US10518836B2 (en) 2017-07-27 2019-12-31 Trvstper, Inc. Suspension assembly for a cycle
US10518839B2 (en) 2017-08-29 2019-12-31 Trvstper, Inc. Inline shock absorber with coil spring for a cycle wheel suspension assembly
US10526039B2 (en) 2017-07-27 2020-01-07 Trvstper, Inc. Suspension assembly for a cycle
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US10549812B2 (en) 2017-08-28 2020-02-04 Trvstper, Inc. Inline shock absorber with gas spring for a cycle wheel suspension assembly
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USD880369S1 (en) 2018-02-08 2020-04-07 Trvstper, Inc. Cycle suspension assembly
USD880371S1 (en) 2018-02-08 2020-04-07 Trvstper, Inc. Cycle suspension assembly
US11084552B2 (en) 2018-09-25 2021-08-10 Specialized Bicycle Components, Inc. Simplified gas spring setup for a trailing link cycle wheel suspension
US11208172B2 (en) 2018-10-05 2021-12-28 Specialized Bicycle Components, Inc. Suspension pivot assemblies having a retention feature
US11230346B2 (en) 2018-09-25 2022-01-25 Specialized Bicycle Components Inc. Cycle wheel suspension assembly having gas pistons with unequal gas piston areas
US11230347B2 (en) 2018-09-25 2022-01-25 Specialized Bicycle Components, Inc. Cycle wheel suspension assembly having gas pistons with unequal gas piston areas
US11230348B2 (en) 2018-09-25 2022-01-25 Specialized Bicycle Components, Inc. Trailing link cycle wheel suspension assembly having gas pistons with unequal gas piston areas
US20220065324A1 (en) * 2018-12-18 2022-03-03 Kyb Corporation Fluid pressure shock absorber
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US11524744B2 (en) 2019-04-09 2022-12-13 Specialized Bicycle Components, Inc. Cycle suspension with rotation sensor
US11654998B2 (en) 2021-05-10 2023-05-23 Sram, Llc Front forks for bicycles
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Cited By (157)

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Publication number Priority date Publication date Assignee Title
US5509674A (en) * 1989-09-26 1996-04-23 Cannondale Corporation Bicycle suspension system
US5195766A (en) * 1990-06-05 1993-03-23 Boge Ag Bicycle with front fork suspension
US5328196A (en) * 1991-03-20 1994-07-12 Showa Manufacturing Co., Ltd. Wheel suspension system for bicycle
US5186481A (en) * 1991-04-03 1993-02-16 Rockshox, Inc. Bicycle with improved front fork wheel suspension
US5094324A (en) * 1991-04-05 1992-03-10 Dah Ken Industrial Co., Ltd. Bicycle shock-absorbing apparatus
US5088705A (en) * 1991-04-05 1992-02-18 Dan Ken Industrial Co., Ltd. Bicycle shock-absorbing apparatus
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JPH02231289A (en) 1990-09-13
US4971344A (en) 1990-11-20
NZ231853A (en) 1992-06-25
EP0377220A3 (en) 1991-01-23
CA2005945C (en) 1997-06-17
DE377220T1 (en) 1991-02-07
DE68919668D1 (en) 1995-01-12
EP0377220A2 (en) 1990-07-11
CA2005945A1 (en) 1990-07-04
JP2823473B2 (en) 1998-11-11
DE68919668T2 (en) 1995-06-08
JPH0616169A (en) 1994-01-25
EP0377220B1 (en) 1994-11-30
DE8915636U1 (en) 1990-12-20
ES2068235T3 (en) 1995-04-16
ATE114567T1 (en) 1994-12-15
AU616827B2 (en) 1991-11-07
AU4679389A (en) 1990-07-12

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